Title
galvanometer series resistor
Identifier
ABDNP:200160a
Description
Wooden box with 4 steel terminals (at corners) with large iron central terminal. ' TYPE 4309A ' Patent dated 22/05/1930.
Date
1930-1960
Format
wood , chrome
Coverage
London
Creator
H. Tinsley & Co. Ltd. / London S.E. 25 The company logo is a superimposed symbol of 'T' and 'H'